[clang] [lldb] [Clang][SPIRV] Add __spirv_event_t builtin type (PR #207077)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

FWIW, I don't think the precommit CI failures are related, but it might be worth a rebase to see if CI is green.

https://github.com/llvm/llvm-project/pull/207077